I purchase the hobie wide cart for the PA. When I rolled the kayak out of the water it felt like one tire rolled off of the wheel. That did not happen but it was flat. I purchase a tire patch kit thinking I had a pin hole. When I held the tire under water and sqeezed the tire air came from the wheel housing. I dont know how to fix that. I have only used the cart a dozen times. Pretty expensive cart for it to break so easy. Help.